Scilab Function
Last update : 12/1/2004

fspecg - stable factorization

### Calling Sequence

  `[gm]=fspecg(g).`

### Parameters

- `g,gm`: `syslin` lists (linear systems in state-space representation)

### Description

returns `gm` with `gm` and `gm^-1` stable such that:

    gtild(g)*g = gtild(gm)*gm

`g` and `gm` are continuous-time linear systems in state-space form.

Imaginary-axis poles are forbidden.